baltimore police commissioner. nice to have you with us. i know you have been following this from the very beginning. i want to start with d.o.j. said. quote, the goal of the review is to provide an independent account of law enforcement actions and responses that day and to identify lessons learned and best practices to help first responders prepare and to respond to active shooter events. we ve seen these types of reviews before in pulse, in san bernardino. where do they ultimately lead, though? they re going back and they re looking at the incident from beginning to end. but ultimately, we ve learned our lessons at columbine. we ve learned that you don t have time to waste, that you ve got to get in there. so with this investigation, i really don t know what will be gained. i feel that this is more of an effort to play hot potato with failure and stall. we know that there are answers that the public, these poor parents, everyone deserves right now. so the federal governm
kelly so we can back her up in case it becomes a difficult airway. reporter: today it s a drill. this is one of the teams that we formed. and the day of the mass casualty event we form teams such as this. reporter: but it wasn t a drill on tuesday when a teenage gunman burst inside robb elementary school in uvalde, texas, murdering 19 children and two teachers, injuring at least 17 others, officials say. it s devastating, you know. i think the same thing that every other person in this country is thinking, you know, how horrible their last moments were, right. and what that scene looks like. reporter: the trauma unit prepared to receive dozens of uvalde s wounded. the blood s been checked. reporter: nurse pauline davis recalls the agonizing wait for patients and the grim realization. after a while you realize more aren t coming and you start